A Color Codes for Pipe Lines ANSI

Color Codes for Pipe lines

COLOUR CODING OF PIPING SYSTEM Type of Pipe

Use of pipe

Colour of pipe

Water Lines:

Raw Water

Olive Green

Settled or clarified water

Aqua

Finished or potable water

Dark blue

Non-potable water

Blue

Water with heating digesters digesters or buildings

Blue with a 6 in. (150 mm) red band space 30 in. (760 mm) apart

Type of Pipe

Use of pipe

Colour of pipe

Chemical Lines:

Alum or primary coagulant

Orange

Ammonia

White

Carbon Slurry

Black

Caustic

Yellow with green band

Chlorine gas solution

Yellow

Fluoride

Light blue with red band

Lime slurry

Light green

Ozone

Yellow with orange band

Polymers or coagulant aids

Orange with green band

Potassium per-magnate

Violet

Soda Ash

Light green with red band

Sulfuric Acid

Yellow with red band

Sulfur dioxide

Light green with yellow band

Type of  Pipe

Use of pipe

Colour of pipe

Waste Lines:

Backwash Waste

Light Brown

Sludge

Dark Brown

Sewer (Sanitary or other) Dark grey Sludge Lines:

Gas Lines:

Other Lines:

Raw Sludge

Brown wid black bands

Sludge recirculation or suction

Brown wid yellow bands

Sludge draw off

Brown wid Orange bands

Sludge recirculation discharge

Brown

Sludge Lines

Orange (or red)

Natural gas

Orange (or red) with Black bands

Compressed air

Green

ANSI Colour Codes The yellow background signifies that the piping may handle hazardous material. Unfortunately, much has changed in the typical plant over the last 70 years since this standard was originally conceived. The basic standard can be traced to the 1920's and use in the US military. Obviously, our definitions for what is "hazardous" has changed. Water, air or carbon dioxide, under certain situations (pressure, heat, mixture with other chemicals) are not always benign.

How do we interpret, for example, materials that should be used for "fire quenching" that are also "hazardous"? Should we use the red or the yellow ANSI scheme? Or, how do we label a pipe that carries both the liquid (which should be green) and gas form of  a chemical (which should be blue)?

Hazards, in other words, are not so easily defined. "Hazardous" may mean that the material is hazardous to a person nearby, or to the operation of the overall plant itself. Could "hazardous" mean that the materials flowing through the process piping, if not handled carefully, could contaminate the product. Or, if leaked into the atmosphere, could the chemical infect the environment or cause damage to employees after cumulative exposure over a period of years? Clearly, the ANSI standard was written for far simpler times.

Color

Std

Red

APWA

Yellow

Meaning

Electric Power Lines, Cables, Conduit and Lighting Cables Gas, Oil, Steam, Petroleum or APWA Gaseous Materials Communication, Alarm or Signal Lines, Cables or Conduit

Example Buried High Voltage Line Natural Gas Distribution Line

Orange

APWA

Buried Fiber Optic Cable

Blue

APWA Water, Irrigation and Slurry Lines

Buried Water Line

Green

APWA Sewers, Drain Line

Buried Storm Sewer Line

Red

Traffic Prohibition

STOP, Yield

Orange

Traffic Temporary Work Zone

Construction Zone Ahead

Yellow

Traffic Caution

Merge Ahead, Slow

Blue

Traffic Information Signs

Hospital

Brown

Traffic Historical or Park

Picnic Area Ahead

Color Green

Std Traffic ANSI Red Sign ANSI Orange Sign ANSI Yellow Sign ANSI Blue Sign ANSI Green Sign ANSI Red Pipe ANSI Yellow Pipe ANSI Blue Pipe ANSI Green Pipe Blue/Red/Yello NFPA w 701

Meaning Directional Signs Danger Signs, Highest Hazard Warning Signs, Medium Hazard Caution Signs, Lowest Hazard

Example Exit 1 Mile, Go Hazardous Voltage Will Cause Death Hazardous Voltage May Cause Death Turn Machine Off When Not In Use

Notice Signs

Employees Only

Safety First Signs

Wear Ear Plugs

Fire Quenching Materials

Fire Protection Water

Materials Inherently Hazardous

Chlorine

Materials of Inherently Low Hazard, Compressed Air Gas Materials of Inherently Low Hazard, Storm Drain Liquid Blue is used for Health Hazards, Red for Flammability and Yellow for reactivity

Variations in colour-coding standards are inevitable in our complex plant and pluralistic society. While laudable, harmonization of colour-codes, then, will be very difficult to achieve. Many plants use other colour-coding; for example, colour-code each system (i.e. Lube Oil is brown, Condensate is green, etc.) or colour code by Unit (i.e. Unit 1 is yellow, Unit 2 is blue, etc.). For most plants, we recommend either the ANSI pipe marker colour codes or simply black on yellow markers. For more complex plants, we recommend a colour-coding by system. For all environments, we recommend the inclusion of RTK information on the valve or on the pipe.

ANSI Color Code for Thermocouple and Thermocouple Extension Wire Thermocouple Wire Color ANSI Symbol Wire Alloys

T/C Extension Wire Color

Polarity Individual

Jacket

Individual

Jacket

J

Iron Constantan(TM)

+JP -JN

White Red

Brown

White Red

Black

K

CHROMEL®* ALUMEL®*

+KP -KN

Yellow Red

Brown

Yellow Red

Yellow

T

Copper Constantan(TM)

+TP -TN

Blue Red

Brown

Blue Red

Blue

E

CHROMEL®* Constantan(TM)

+EP -EN

Purple Red

Brown

Purple Red

Purple

N

Nicrosil(TM) Nisil(TM)

+NP -NN

Orange Red

Brown

Orange Red

Orange

RSX

Copper Copper Alloy

+RSP -RSN

-

-

Black Red

Green

BX

PCLW630/Copper Copper

+BP -BN

-

-

Grey Red

Grey

W3X W5X

Alloy 203; Alloy 405 +WP Alloy 225; Alloy 426 -WN

-

-

White/Red Red

White/R ed

ANSI & Pipes What are the ANSI pipe marking guidelines and do we have to follow them? No, many industries have not followed the ANSI guidelines. But they can still a useful guide to smaller firms, even as they becomes less popular with larger firms. The ANSI pipe marker guidelines define both colour codes and sizes.

Material

Marker Color

Fire Quenching Materials

Red

Materials Inherently Hazardous

Yellow

Materials of Inherently Low Hazard, Gas

Blue

Materials of Inherent Low Green Hazard, Liquid

Length of  Colour Field Pipe OD Min Pipe OD Max for Pipe Marker

Size of Letter for Legend

0.75"

1.25"

8"

0.5"

1.5"

2"

8"

0.75"

2.5"

6"

12"

1.25"

8"

10"

24"

2.5"

10"

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32"

3.5"

The problem, unfortunately, is that the modern process plant has become ever more complex and internationally "aware". To most nuclear and large international chemical firms, the traditional ANSI pipe marker designs are both superficial and outdated. Note that OSHA or an ISO 9000 audit team inspects your plant, not ANSI! The demand, then, to put more and more information on the pipe marker is driven by several new regulations and standards: the EPA Standards for Clean Air, the OSHA Process Chemical Specifications and ISO 9000 programs.

Just as OSHA is changing their focus from complianceoriented standards to performance-oriented standards, plants are changing too. Before, the only question was whether or not your pipes, valves and hazards were labeled at all. Simple, one-word legends were sufficient (enough to "CYA", to put it bluntly). Now, the questions are more complicated: (1) do your employees actually understand potential hazards, (2) do they know how to avoid the hazard, and most importantly (3) do they know what to do in an emergency. Passive, single word pipe markers have been supplanted by those giving more information and integrating into the plant's proactive hazardous communication training.

SAFETY & PIPING COLOR CODES OSHA SAFETY COLORS GENERAL INFORMATION: The Occupational Safety and  Health Act (OSHA) requires that all industries colourcode safety equipment locations, physical hazards and   protective equipment. Safety colour codes were established by the American National Standards Institute (ANSI) and adopted by  OSHA for use in hazardous areas. Porter  Coatings’  Safety Colours conform to OSHA and ANSI guidelines. OSHA does not specify the exact shade of colour, but the colour-coding should be consistent throughout a  facility.

RED: THE BASIC COLOR FOR THE IDENTIFICATION OF: Fire Protection Equipment and Apparatus: Used for: fire alarm boxes, fire blanket boxes, fire buckets or pails, fire exit signs, fire extinguishers, fire hose locations, fire hydrants, fire pumps, fire sirens, post indicator valves for sprinkler system and sprinkler piping. Danger. Used for: safety cans or other portable containers of flammable liquids having a flashpoint at or below 80°F, table containers of  flammable liquids (with additional clearly visible identification of the contents either in the form of a yellow band around the can or the name of the contents conspicuously stencilled or painted on the can in yellow and danger signs. Stop. Used for: Emergency stop bars on hazardous machines and stop buttons or electrical switches used for emergency stopping of  machinery. PORTER COATINGS SAFETY RED: 2772 PORTER GUARD™ Fast Dry Gloss Enamel Safety Red 2912 PORTER GUARD™ DTM Acrylic Gloss Enamel Safety Red PC4072 PORTERGLAZE™ 4000 Gloss Epoxy Safety Red • • •

ORANGE: THE BASIC COLOR FOR DESIGNATING DANGEROUS PARTS OF MACHINES OR ENERGIZED EQUIPMENT WHICH MAY CUT, CRUSH, SHOCK, OR OTHERWISE INJURE. Used to emphasize such hazards when enclosure doors are open or when gear belt or other guards around moving equipment are open or removed, exposing unguarded hazards. PORTER COATINGS SAFETY ORANGE: 2754 PORTER GUARD™ Fast Dry Gloss Enamel Safety Yellow 2913 PORTER GUARD™ DTM Acrylic Gloss Enamel Safety Yellow PC4074 PORTERGLAZE™ 4000 Epoxy Gloss Yellow Base PC9074 PORTERTHANE™ 9000 Urethane Gloss Yellow Base •

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YELLOW: THE BASIC COLOR FOR DESIGNATING CAUTION: Used for: marking physical hazards such as striking against, stumbling, falling, tripping and “caught in between.” Solid yellow, yellow and black stripes, yellow and black checkers (or yellow with suitable contrasting background) should be used interchangeably, using the combination which will attract the most attention in the particular environment.

PORTER COATINGS SAFETY YELLOW: •

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2754 PORTER GUARD™ Fast Dry Enamel Safety Yellow 2913 PORTER GUARD™ DTM Acrylic Gloss Enamel Safety Yellow

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PC4074 PORTERGLAZE™ 4000 Epoxy Gloss Yellow Base

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PC9074 PORTERTHANE™ 9000 Urethane Gloss Yellow Base

GREEN: THE BASIC COLOR FOR DESIGNATING “SAFETY” AND THE

LOCATION OF FIRST AID EQUIPMENT (OTHER THAN FIREFIGHTING EQUIPMENT) PORTER COATINGS SAFETY GREEN: 2744 PORTER GUARD™ Fast Dry Enamel Ultra Deep Base 2904 PORTER GUARD™ DTM Acrylic Gloss Enamel Ultra Deep Base PC4044 PORTERGLAZE™ 4000 Epoxy Gloss Neutral Base PC9044 PORTERTHANE™ 9000 Urethane Gloss Neutral Base •

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BLUE: THE BASIC COLOR FOR DESIGNATING “CAUTION”, LIMITED TO WARNING AGAINST THE STARTING, THE USE OF, OR THE MOVEMENT OF EQUIPMENT UNDER REPAIR OR BEING WORKED ON. PORTER COATINGS SAFETY BLUE: 2744 PORTER GUARD™ Fast Dry Enamel Ultra Deep Base 2904 PORTER GUARD™ DTM Acrylic Gloss Enamel Ultra Deep Base PC4044 PORTERGLAZE™ 4000 Epoxy Gloss Neutral Base PC9044 PORTERTHANE™ 9000 Urethane Gloss Neutral Base •

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PURPLE: THE BASIC COLOR FOR DESIGNATING RADIATION HAZARDS (X-RAY, ALPHA, BETA, GAMMA, NEUTRON, PROTON, DEUTERON, AND MESON TYPES). Used in combination with purple for markers such as tags, labels, signs and floor markers.

PORTER COATINGS SAFETY PURPLE: Tint* from: •

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2744 PORTER GUARD™ Fast Dry Enamel Ultra Deep Base 2904 PORTER GUARD™ DTM Acrylic Gloss Enamel Ultra Deep Base PC4044 PORTERGLAZE™ 4000 Epoxy Gloss Neutral Base PC9074 PORTERTHANE™ 9000 Urethane Gloss Neutral Base

BLACK, WHITE, OR COMBINATIONS OF BLACK AND WHITE: THE BASIC COLORS FOR DESIGNATING TRAFFIC AND HOUSEKEEPING MARKINGS. Solid white, solid black, single colour striping, alternate stripes of black and white, or black and white checkers should be used in accordance with local conditions. PORTER COATINGS SAFETY BLACK: 2728 PORTER GUARD™ Fast Dry Enamel Black 2928 PORTER GUARD™ DTM Acrylic Gloss Black NOTE: The Porter Coatings Industrial Colour Selection Guide (Order #5860/E) for safety colour tint formulas. •

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